JP3241269B2 - Lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device, and more particularly to a wire lock device used to lock a wheel or the like by connecting both ends of a wire in a loop.

[0002]

2. Description of the Related Art A locking device for fixing an end of a wire is disclosed in Japanese Patent Application Laid-Open No. H8-4222 previously proposed by the present applicant.
No. 5 is mentioned. In this conventional example, both ends of a wire inserted from two wire insertion holes are locked by a latch and cannot be removed, and a wheel or the like is locked by a looped wire via a lock device, and a key cylinder is locked. By rotating to the unlock position, the latch by the latch is released.

[0003]

However, in the above-described conventional example, when the key cylinder is rotated to the unlock position, the latches that lock the both ends of the wire are released at the same time. If the locking device is not firmly held and a releasing operation is not performed on the locking device, the locking device may be released from the restraint from the wire and fall, resulting in a disadvantage that the usability is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and one of them is securely connected to a wire even during an unlocking operation to prevent an unnecessary drop during an unlocking operation. Accordingly, it is an object of the present invention to provide a lock device having improved usability.

[0005]

SUMMARY OF THE INVENTION In the present invention, an object of the present invention is to provide a sleeve 3 which is restricted in idling by a stopper 1 and is accommodated in a case 2 until a predetermined rotational torque is applied.
A key cylinder 4 that can rotate in a clockwise and counterclockwise direction by a predetermined angle around a neutral position in the sleeve 3 only when a genuine key is inserted, and a rotor 5 that rotates in conjunction with the key cylinder 4 by a connecting member 9. A pair of latches 8, 8 which resiliently lock the distal ends of the wires 7 inserted from the pair of wire insertion holes 20, 20 formed in the opposing wall surfaces of the case 2 and move to the unlocked position by the rotation of the rotor 5. The stopper 1 moves the connecting member 9 by the idling of the sleeve 3 to release the connection between the key cylinder 4 and the rotor 5, and one of the wire insertion holes 20 selected according to the rotation direction of the genuine key. This is achieved by providing a locking device that allows only the wire end locked therein to be withdrawn.

The key cylinder 4 rejects rotation in the sleeve 3 and turns to the sleeve 3 against a genuine key, that is, a different key other than a key with a matching key code, or an unauthorized unlocking operation by a driver or the like. Only when the torque is transmitted and the genuine key is inserted, the sleeve 3 can idle in the sleeve 3 clockwise and counterclockwise around the neutral position by a predetermined angle. When the magnitude of the rotational torque on the sleeve 3 due to the unauthorized unlocking operation exceeds a predetermined value, the stopper 1 is released and the sleeve 3 idles in the case 2 to prevent an excessive load on the key cylinder 4.

Prohibition of idling in the sleeve 3 due to torque,
The selection structure of the permission is the V-shaped groove 21 provided on the inner wall of the case 2.
In addition, it can be implemented by fitting a stopper 1 urged in the protruding direction and attached to the sleeve 3 so as to be able to advance and retreat.

When the stopper 1 is in the operating state, that is, when the rotation of the sleeve 3 in the case 2 is prohibited by the stopper 1 and the cylinder is rotated by the genuine key, the rotor 5 is turned on. It rotates in conjunction with the cylinder 4 to operate a latch 8 described later.

The connection / disconnection structure between the key cylinder 4 and the rotor 5 is achieved, for example, by the sinking operation of the stopper 1 into the sleeve 3 at the time of releasing the connecting member 9 which protrudes from the cylinder and enters the sleeve 3. This can be achieved by forced sedimentation.

In order to operate the latch 8 by the rotation of the rotor 5, it is possible to use a pair of sliders 6, 6 arranged in the case 2 as proposed in claim 3 for example. That is, the pair of sliders 6, 6 are each horizontally movable between a locked position and an unlocked position, and as shown in FIG. 3, the rotor 5 rotates clockwise in conjunction with the clockwise rotation of the cylinder. When rotating in the rotation direction to reach the stroke end position, one slider 6 remains at the lock position, and only the other slider 6 ′ moves to the unlock position, and when rotated counterclockwise, As shown in FIG. 4, only one slider 6 moves to the unlock position.

The latches 8 operate in one-to-one correspondence with the operations of the respective sliders 6, and resiliently lock the tips of the wires 7 inserted from the corresponding wire insertion holes 20. The release of the latch 8 is performed by moving the slider 6 to the unlock position against the elastic force of the latch 8, and the latch 8 is inserted into the wire insertion hole 20 which is moving to the unlock position. Only the tip of the wire 7 on the other side can be removed.

With the above configuration, in the present invention, the latch 8 is always released from one of the wire insertion holes 2.
Since it is only 0 and the end of the wire 7 inserted from the other wire insertion hole 20 is not released, both ends do not detach from the lock device at the same time, and the usability is improved.

[0013]

1 and 2 show an embodiment of the present invention. In the figure, reference numeral 2 denotes a case, a metal inner case 2A and a frame 2B obtained by bending a metal plate.
And a cover 2C made of a synthetic resin, which is an outer skin of the lock device.

The inner case 2A is divided into a main body portion 22 and a lid portion 23 as shown in FIG. , And are integrated by being surrounded by a frame 2B fixed by pins 24 (see FIG. 1).

Reference numeral 3 denotes a sleeve which is prevented from falling off by the clip 25 and is inserted into the sleeve insertion hole 22a of the inner case 2A, and the key cylinder 4 is held in the sleeve 3. As shown in FIG. 2A, the key cylinder 4 has an unlock position at a position rotated by 90 degrees clockwise around the neutral position and counterclockwise around the neutral position. An open groove 30 for accommodating the tumbler 40 projecting from the key cylinder 4 when not inserted or when an unauthorized key is inserted, and for restricting the rotation of the key cylinder 4 in the sleeve 3 is opened.

The sleeve 3 is formed in a cylindrical shape so as to be rotatable in the inner case 2A, and has a plate-shaped stopper 1 at its end portion for inhibiting relative rotation with the inner case 2A.
Is attached. As shown in FIG. 6, the stopper 1 is urged in a protruding direction by a compression spring 10, and a V-shaped projection 11 formed at the tip is formed in a V-shape recessed in a sleeve insertion hole 22a of the inner case 2A. When the sleeve 3 is fitted in the groove 21, the idling of the sleeve 3 in the inner case 2A is prevented, and when a rotational torque equal to or more than a predetermined value is applied to the sleeve 3, as shown in FIG. Is settled in the sleeve 3 by the component force toward the center of the sleeve 3 that is generated in the inner case 2 so as to release the fitting with the V-shaped groove 21 and allow the sleeve 3 to idle in the inner case 2A. The key cylinder 4 extends to the rear through the sleeve 3 and has a compression spring 90 at its end.
Thus, a cap-shaped connecting member 9 urged in the protruding direction is mounted.

Reference numeral 5 denotes a rotor which is covered at the end of the key cylinder 4. The key cylinder 4 is provided in the inner case 2A.
It is arranged so as to be rotatable around the same axis. The rotor 5 is provided with a fitting groove 50 on a sliding contact wall surface with the key cylinder 4, and idling with respect to the key cylinder 4 is prevented in a state where the connecting member 9 on the key cylinder 4 side is received in the fitting groove 50, Rotation in conjunction with the key cylinder 4 becomes possible.

The connecting member 9 is arranged such that substantially half of the connecting member 9 is exposed from the front end face of the rotor 5 and the stopper 1
Is formed with a folded piece 12 which is folded rearward, and presses the connecting member 9 toward the center in accordance with the settling operation of the stopper 1 so that the rotor 5 can idle with respect to the key cylinder 4.

With the above configuration, when the key cylinder 4 is rotated by the genuine key, the rotating force of the key cylinder 4 is transmitted to the rotor 5 via the connecting member 9 and interlocked with the key cylinder 4 of the rotor 5. When the key cylinder 4 is unlocked incorrectly, the key cylinder 4 is prevented from idling in the sleeve 3 by the tumbler. And a relative rotational force between the inner case 2A and the sleeve 3 is generated. The stopper 1 attached to the sleeve 3 by this rotational force obtains a component force in the settling direction from the V-shaped groove 21 and sinks into the sleeve 3 against the reaction force of the compression spring 10,
At the same time, the connecting member 9 on the key cylinder 4 side
As a result, the engagement with the fitting groove 50 in the rotor 5 is released, and the rotation operation of the rotor 5 by the operation of the key cylinder 4 is disabled.

On the other hand, a cam 51 is provided on the rear end face of the rotor 5.
Are bulged, and the pair of sliders 6, 6 are arranged in a symmetrical posture so as to sandwich the cam 51. The slider 6 is shown in FIG.
As shown in FIG. 4, when the key cylinder 4 is in the neutral position, the key cylinder 4 can be moved horizontally between a lock position in contact with the stopper wall 26 of the inner case 2 </ b> A and an unlock position moved outward. Is maintained in the locked position by being urged by a latch 8 described later.

The cam 51 has a line-symmetrical shape as shown in FIG. 2, and enters one of the slider 6 placement areas depending on the rotational operation direction of the key cylinder 4 to lock one of the sliders 6. Push it out of the position and move it to the unlocked position.

Slightly behind the sliding area of the slider 6, a pair of latches 8, one for each slider 6,
8 are arranged. As shown in FIG. 7, the latch 8 is pivotally supported so as to be rotatable around a latch rotation shaft 27 erected on the inner case 2A. The latch 8 includes an operation protrusion 80 that abuts on the operation surface 60 of the slider 6 and the latch rotation shaft 27.
Locking portion 81 arranged on the opposite side to the operation protrusion 80 with respect to
The operation protrusion 80 is pushed by the movement of the slider 6 in the unlocking direction, and rotates from a locking position of a distal end portion of the wire 7 described later to a locking release position. Further, the latch 8 is urged by the torsion spring 82 toward the locking position to press the operation protrusion 80 against the operation surface 60 and apply an urging force to the slider 6 in the lock position direction.

The locking portion 81 has a curvature surface substantially equal to the curvature of the annular concave portion 70 formed on the metal fitting attached to the tip of the wire 7, and is pushed by the tip of the wire 7 when the tip of the wire 7 is inserted. After the wire 7 is once rotated to the unlock position and the tip of the wire 7 is dodged, the wire 7 returns to the locked position by the restoring force of the torsion spring 82 and locks the annular concave portion 70.

Under the above configuration, the latch 8 is connected to the key cylinder 4
2 is stopped at the lock position as shown in FIG. 2 and the tip of the wire 7 is
When the fitting is inserted through the insertion hole, the metal fitting interferes with the locking portion 81 of the latch 8 and pushes the locking portion 81 inward.
Is retracted to the unlock position, and the annular concave portion 70 is locked. The latch 8 locked to the annular concave portion 70 includes:
Since the operation protrusion 80 is in contact with the operation surface 60 of the slider 6 whose movement is blocked by the cam 51, further overrun from the lock position is prevented,
The pulling out of the wire 7 that generates a rotational force in the latch 8 in the direction is prevented.

Next, the genuine key is inserted and the key cylinder 4 is inserted.
When a clockwise or counterclockwise rotation operation is given to the rotor, the rotor 5 rotates following the key cylinder 4 as shown in FIG. 3 or FIG. It selectively shifts to the unlock position, and only the corresponding one of the latches 8 rotates toward the unlock position to release the locking of the locking portion 81.

FIG. 8 shows another embodiment of the present invention. In the description of the present embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof will be omitted. This embodiment is not a free-turn type in which the key cylinder 4 rotates freely at the time of unauthorized unlocking.
Is locked in the groove 28 of the inner case 2A to fix the key cylinder 4 at the time of locking, and is inserted into the cylinder insertion hole 22b of the inner case 2A from the neutral position by 90 degrees from the neutral position.
The key cylinder 4 may be disposed so as to be rotatable at each time, and the latch 8 may be moved to the unlocked position by the key cylinder 4 when the key cylinder 4 rotates to the stroke end position. In this case, whether to form the key cylinder 4 and the rotor 5 integrally or separately, and whether to interpose or omit the slider 6 are determined by design. In the embodiment of the present invention, the distal end of the wire 7 is locked to the locking portion 81, but a foldable bar material may be used instead of the wire.

[0027]

As is apparent from the above description, according to the present invention, the lock device does not fall off the wire even when a release operation is given to the lock device, so that the usability is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIGS. 2A and 2B are views showing a key-neutral position, wherein FIG. 2A is a front view and FIG. 2B is a sectional view taken along line II-II of FIG.

3A and 3B are diagrams showing a key operation state, in which FIG.
3B is a front view, and FIG. 3C is a sectional view taken along line III-III of FIG.

4A and 4B are diagrams showing key operations in a direction opposite to that of FIG. 3; FIG.
Is a sectional view, (b) is a front view, (c) is a IV-I of (a).
It is a V line sectional view.

FIG. 5 is a partial cross-sectional perspective view of the inner case.

FIGS. 6A and 6B are cross-sectional views taken along the line VI-VI of FIG. 1, wherein FIG. 6A is a cross-sectional view illustrating an operation with a genuine key, and FIG.

FIG. 7 is an exploded perspective view showing a mounted state of the latch.

FIG. 8 is a cross-sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stopper 2 Case 20 Wire insertion hole 3 Sleeve 4 Key cylinder 5 Rotor 6 Slider 7 Wire 8 Latch

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 71/00 B60R 25/00 603 B62H 5/14

Claims (3)

(57) [Claims] 1. A sleeve which is accommodated in a case while idling is restricted by a stopper until a predetermined rotational torque is applied, and which is clockwise and counterclockwise centered on a neutral position within the sleeve only when a genuine key is inserted. A key cylinder that can rotate at an angle, a rotor that rotates in conjunction with the key cylinder by means of a connecting member, and a rotor that elastically locks a tip of a wire inserted through a pair of wire insertion holes formed in opposing wall surfaces of the case. A pair of latches that move to an unlocked position by rotation of the sleeve, the stopper moves the connecting member by idling of the sleeve to release the connection between the key cylinder and the rotor, and is selected by the rotation direction of the genuine key. A lock device that allows only a wire end locked in one of the wire insertion holes to be removed. 2. A key cylinder which can be rotated clockwise and counterclockwise by a predetermined angle around a neutral position in a case only when a genuine key is inserted, and a pair of wire insertion holes formed in opposed wall surfaces of the case. And a pair of latches which resiliently lock the tip of the wire to be moved to the unlock position by the rotation of the key cylinder, and engage in one of the wire insertion holes selected by the rotation direction of the genuine key. A locking device that allows only the stopped wire end to be removed. 3. The lock device according to claim 1, wherein a pair of sliders is disposed in the case, and the rotor 2 releases the engagement between the latch and the wire by rotating the key cylinder of the rotor 2 to rotate the slider.